Cleanup.

src/bgfx.cpp

@@ -3787,6 +3787,7 @@ error:
 	uint32_t submit(uint8_t _id, ProgramHandle _program, IndirectBufferHandle _indirectHandle, uint16_t _start, uint16_t _num, int32_t _depth, bool _preserveState)
 	{
 		BGFX_CHECK_MAIN_THREAD();
+		BGFX_CHECK_CAPS(BGFX_CAPS_DRAW_INDIRECT, "Draw indirect is not supported! Use bgfx::getCaps to check BGFX_CAPS_DRAW_INDIRECT backend renderer capabilities.");
 		return s_ctx->submit(_id, _program, _indirectHandle, _start, _num, _depth, _preserveState);
 	}
 
@@ -3835,12 +3836,15 @@ error:
 	uint32_t dispatch(uint8_t _id, ProgramHandle _handle, uint16_t _numX, uint16_t _numY, uint16_t _numZ, uint8_t _flags)
 	{
 		BGFX_CHECK_MAIN_THREAD();
+		BGFX_CHECK_CAPS(BGFX_CAPS_COMPUTE, "Compute is not supported! Use bgfx::getCaps to check BGFX_CAPS_COMPUTE backend renderer capabilities.");
 		return s_ctx->dispatch(_id, _handle, _numX, _numY, _numZ, _flags);
 	}
 
 	uint32_t dispatch(uint8_t _id, ProgramHandle _handle, IndirectBufferHandle _indirectHandle, uint16_t _start, uint16_t _num, uint8_t _flags)
 	{
 		BGFX_CHECK_MAIN_THREAD();
+		BGFX_CHECK_CAPS(BGFX_CAPS_DRAW_INDIRECT, "Dispatch indirect is not supported! Use bgfx::getCaps to check BGFX_CAPS_DRAW_INDIRECT backend renderer capabilities.");
+		BGFX_CHECK_CAPS(BGFX_CAPS_COMPUTE, "Compute is not supported! Use bgfx::getCaps to check BGFX_CAPS_COMPUTE backend renderer capabilities.");
 		return s_ctx->dispatch(_id, _handle, _indirectHandle, _start, _num, _flags);
 	}